WCA September 2014

Technology news Servo-controlled stamping and forming machine

WITH the RM-NC Bihler presents an entirely new generation of stamping and forming machines. The completely servo-controlled machine is perfectly designed for the economical production of stamping and forming parts as well as wire parts in all lot sizes. The RM-NC shows its benefits especially for small and medium lot sizes and for a large number of different product versions. Very short, 100 per cent reproducible set-up and changeover operations are its key strengths. These are ensured by modern servo technology in combination with the intuitive control technology of the Bihler VariControl VC 1. For instance, the slide units can be aligned in radial and linear direction simply by pressing a button on the integrated slide positioning unit. Rapid tool change systems help to further reduce set-up times. The RM-NC is impressive also in terms of productivity. Up to 300 manufactured parts per minute speaks for itself. Costs for new tools are reduced considerably by the small number of components

❍ Servo-controlled stamping and forming machine RM-NC with slide positioning unit for fully automatic adjustment of the slide units in radial and linear direction. Photograph copyright of Otto Bihler Maschinenfabrik GmbH & Co KG

replace several mechanical machines and allows users a much higher creation of value. Compared to conventional stamping and forming machines, an output increased by up to 200 per cent can be achieved, lot sizes can be processed in half the time and changeover times reduced by a factor of nine. Particularly time-intensive tasks such as adjusting the material feed, positioning the slide units and adjusting the movements of the forming punch are now completed in a matter of minutes on the VC 1 machine and process control system. The servo-controlled processing units guarantee a consistently high product quality. All processing units are freely programmable over the whole working range. Working stroke, lower dead centre, adjustment of the stroke position and the motion profile can be selected freely. Forming movements can be executed with constant transmission of force.

while existing tools in the RM series can easily be integrated. The servo-controlled machine is able to

The new RT600 Eurolls straightening and cutting line for electrodes, capable of producing welding electrode sticks at 10m/sec, was one of the major Major attraction for Eurolls

attractions at Eurolls’ stand at wire 2014 in Düsseldorf. The full line, which includes a seven step drawing line, allows productivity to be increased by placing Eurolls CL25C33 cold rolling micro cassettes instead of dies, and is designed to process low carbon or stainless steel wire rod diameter 5.5mm,

❍ New RT600 straightening and cutting line for electrodes

draw it down to the final product diameters (2, 2.5, 3.25, 4, 4.8 and 5mm), then clean the wire, straighten it and cut it in the two main product lengths (350 and 450mm). The main characteristic and advantage of this equipment is the capacity to achieve high production speeds, maintaining the surface finish and accuracy in stick diameter and length, requested for this type of material – basic requirements to guarantee smooth operation in the successive steps of the process. Eurolls SpA – Italy Website : www.eurolls.com

Otto Bihler Maschinenfabrik GmbH & Co KG – Germany Website : www.bihler.de

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Wire & Cable ASIA – September/October 2014